For the perception of the beautiful we have the term "taste"--a metaphor taken from that which is passive in the body and transferred to that which is active in the mind.

must acknowledge, that to act properly is much more valuable than to think justly or reason acutely.

There is no greater impediment to the advancement of knowledge than the ambiguity of words. To this chiefly it is owing that we find sects and parties in most branches of science [and politics]; and disputes that are carried on from age to age, without being brought to issue.

In every case, we ought to act that part towards another, which we would judge to be right in him to act toward us, if we were in his circumstances and he in ours; or more generally - What we approve in others, that we ought to practise in like circumstances, what we condemn in others we ought not to do.

There is no greater impediment to the advancement of knowledge than the ambiguity of words.

I wanted to be a part of the downtown renaissance.

It is the invaluable merit of the great Basle mathematician Leonard Euler, to have freed the analytical calculus from all geometric bounds, and thus to have established analysis as an independent science, which from his time on has maintained an unchallenged leadership in the field of mathematics.