Duty is for Kant the One and All. Out of the duty of gratitude, he claims, one has to defend and esteem the ancients; and only out of duty has he become a great man.
Karl Wilhelm Friedrich Schlegel

He who does not become familiar with nature through love will never know her.
Karl Wilhelm Friedrich Schlegel

The main thing is to know something and to say it.
Karl Wilhelm Friedrich Schlegel

Where there is politics or economics, there is no morality.
Karl Wilhelm Friedrich Schlegel

Virtue is reason which has become energy.
Karl Wilhelm Friedrich Schlegel

No idea is isolated, but is only what it is among all ideas.
Karl Wilhelm Friedrich Schlegel

Many works of the ancients have become fragments. Many works of the moderns are fragments at the time of their origin.
Karl Wilhelm Friedrich Schlegel

A definition of poetry can only determine what poetry should be and not what poetry actually was and is; otherwise the most concise formula would be: Poetry is that which at some time and some place was thus named.
Karl Wilhelm Friedrich Schlegel