All knowledge that is not the real product of observation, or of consequences deduced from observation, is entirely groundless and illusory.

It is not enough to discover and prove a useful truth previously unknown, but that it is necessary also to be able to propagate it and get it recognized.

The form follows the function.

What nature does in the course of long periods we do every day when we suddenly change the environment in which some species of living plant is situated.

Habits form a second nature.

It is not always the magnitude of the differences observed between species that must determine specific distinctions, but the constant preservation of those differences in reproduction.

Leaving behind books is even more beautiful — there are far too many children.

The only place you will find love before sacrifice is in the dictionary.

Don't think of what you have to do, don't consider how to carry it out!" he exclaimed. "The shot will only go smoothly when it takes the archer himself by surprise.

Great nations are never impoverished by private, though they sometimes are by public prodigality and misconduct.

If you look at everything straight on, there is nothing to be afraid of.

Men and women succeed because they find a field of endeavor that matches their interests and abilities.

You're under pressure when you produce facts. You're working with facts in journalism, but you're under all kinds of formal constraints; there are expectations.

I'm all for in my production, creating really unique textures and sounds - for me that's what I love about music.

People think, "She's just a rich kid." Until I was 18, I was. Then I was broke. I've never taken a dime off my parents. I'm completely self - made.

Art is animated by invisible forces that rule the universe.