You'll never attain it unless you know the feeling.

With the growth of knowledge our ideas must from time to time be organized afresh. The change takes place usually in accordance with new maxims as they arise, but it always remains provisional.

We are the slaves of objects around us, and appear little or important according as these contract or give us room to expand.

When I say to the Moment flying; 'Linger a while -- thou art so fair!' Then bind me in thy bonds undying, And my final ruin I will bear!

What people call the spirit of the times is mostly their own spirit in which the times mirror themselves.

Nature knows no pause in progress and development, and attaches her curse on all inaction.

Impotent hatred is the most horrible of all emotions; one should hate nobody whom one cannot destroy.