Speak what you think today in hard words and tomorrow speak what tomorrow thinks in hard words again, though it contradict every thing you said today.

It is the last lesson of modern science, that the highest simplicity of structure is produced, not by few elements, but by the highest complexity.

We are not free to use today, or to promise tomorrow, because we are already mortgaged to yesterday.

The delicate muses lose their head if their attention is once diverted. Perhaps if you were successful abroad in talking and dealing with men, you would not come back to your bookshelf and your task. When the spirit chooses you for its scribe to publish some commandment, it makes you odious to men and men odious to you, and you shall accept that loathsomeness with joy. The moth must fly to the lamp, and you must solve those questions though you die.

Echo waits with art and care And will the faults of song repair.

Many a man had taken the first step. With every additional step you enhance immensely the value of your first.

Heroism feels and never reasons, and therefore is always right.