Hard conditions of life are indispensable to bringing out the best in human personality.
Alexis Carrel

Hence, even in the domain of natural science the aid of the experimental method becomes indispensable whenever the problem set is the analysis of transient and impermanent phenomena, and not merely the observation of persistent and relatively constant objects.
Wilhelm Wundt

I don't think success is harmful, as so many people say. Rather, I believe it indispensable to talent, if for nothing else than to increase the talent.
Jeanne Moreau

I have always been an admirer. I regard the gift of admiration as indispensable if one is to amount to something; I don't know where I would be without it.
Francois de La Rochefoucauld

I said, yet again, for Germany, Europe is not only indispensable, it is part and parcel of our identity. We've always said German unity, European unity and integration, that's two parts of one and the same coin. But we want, obviously, to boost our competitiveness.
Angela Merkel

I say it is indispensable to look ahead of and behind oneself in the present. If there is such a thing as tradition, and I believe there is, it can only exist in the sense of the most profound movements of culture.
Robert Delaunay

I stand for simple justice, equal opportunity and human rights. The indispensable elements in a democratic society - and well worth fighting for.
Helen Suzman

Ideology... is indispensable in any society if men are to be formed, transformed and equipped to respond to the demands of their conditions of existence.
Louis Althusser

If we have to use force, it is because we are America. We are the indispensable nation. We stand tall. We see further into the future.
Madeleine Albright

If you combat an international phenomenon, it is indispensable to share information internationally.
Gijs de Vries

In complex trains of thought signs are indispensable.
George Henry Lewes

In fact, effective solidarity with the poor, both individual persons and entire nations, is indispensable for the construction of peace.
Claudio Hummes

In preparing for battle I have always found that plans are useless, but planning is indispensable.
Dwight D. Eisenhower

In the Federal Government, electronic records are as indispensable as their paper counterparts for documenting citizens' rights, the actions for which officials are accountable, and the nation's history.
Allen Weinstein

India has indeed a great and free future before her, in which she can make her special contribution to the well-being of mankind. The first and indispensable part of that contribution is to work with the United Nations for the defeat of fascism and of brutal aggression.
Stafford Cripps

International cooperation, multilateralism is indispensable.
Hans Blix

Joint-stock companies are yet in their infancy, and incorporated capital, instead of being a thing which can be overturned, is a thing which is becoming more and more indispensable.
William Graham Sumner

Judaism boasts of no exclusive revelation of eternal truths that are indispensable to salvation, of no revealed religion in the sense in which that term is usually understood.
Moses Mendelssohn

Leadership and learning are indispensable to each other.
John F. Kennedy

Like all revolutions, the surrealist revolution was a reversion, a restitution, an expression of vital and indispensable spiritual needs.
Eugene Ionesco