He who lives in the present lives in eternity.

Genius is talent in which character makes itself heard.

One is unable to notice something because it is always before one's eyes.

If we were to imagine an orange on the blue side or green on the red side or violet on the yellow side, it would give us the same impression as a north wind coming from the southwest.

For a large class of cases - though not for all - in which we employ the word meaning it can be explained thus: the meaning of a word is its use in the language.

Philosophy is like trying to open a safe with a combination lock: each little adjustment of the dials seems to achieve nothing, only when everything is in place does the door open.

Don't ask what it means, but rather how it is used.