Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement.

In progressive societies the concentration[of wealth] may reach a point where the strength of number in the many poor rivals the strength of ability in the few rich; then the unstable equilibrium generates a critical situation, which history has diversely met by legislation redistributing wealth or by revolution distributing poverty.

All deductions having been made, democracy has done less harm, and more good, than any other form of government. It gave to human existence a zest and camaraderie that outweighed its pitfalls and defects. It gave to thought and science and enterprise the freedom essential to their operation and growth. It broke down the walls of privilege and class, and in each generation it raised up ability from every rank and place.

I came to think of myself, not as a dance and chaos of molecules, but as a brief and minute portion of that majestic process

Destroy it. There may be a redistribution of the land, but the natural inequality of men soon re-creates an inequality of possessions and privileges, and raises to power a new minority with essentially the same instincts as the old.

The ego is willing but the machine cannot go on. It's the last thing a man will admit, that his mind ages.

Tolerance grows only when faith loses certainty; certainty is murderous.