# User:Y-S.Ko

## Quotes

### Philosophy

• Life is like riding a bicycle. To keep your balance you must keep moving.
• Wisdom is purified by morality, and morality is purified by wisdom: where one is, the other is, the moral man has wisdom and the wise man has morality, and the combination of morality of wisdom is called the highest thing in the world.
• All the better; they do not force me to do anything that I would not have done of my own accord if I did not dread scandal.
• But all things excellent are as difficult as they are rare.

### Society

• Hence it comes that all armed prophets have been victorious, and all unarmed prophets have been destroyed.
• There are three classes of intellects: one which comprehends by itself; another which appreciates what others comprehend; and a third which neither comprehends by itself nor by the showing of others; the first is the most excellent, the second is good, and the third is useless.
• It is not titles that make men illustrious, but men who make titles illustrious.

### Science

• ${\displaystyle e^{i\pi }+1=0.\,\!}$
• ${\displaystyle e^{ix}=\cos x+i\sin x\,\!}$
• ${\displaystyle \mathbf {F} =m\,{\frac {\mathrm {d} \mathbf {v} }{\mathrm {d} t}}=m\mathbf {a} ,}$