It's not as good as action.

It's not enough to have knowledge, but you should also use it. It is not enough to have a wish, but also to act. -Goethe

There is no end to the bold activities of science, and there should be no end. -Gorky

We can't wait for the gift of nature, we have to ask for it from nature. -michurin

If you want to gain an insight, you first need labor, your own labor, your own initiative and your own practice. -Dostoevsky

All theoretical laws depend on practical laws; If there is only one practical rule, then they all rely on this practical rule. -fichte

whatever is correct in theory will certainly be effective in practice. -Kant

Everything that must be argued in theory should simply be solved by the practice of real life. -Chernyshevski

What you get on the shortcut will never be amazing. When you hit the wall with experience and know-how, you will know: on the road to fame, it is not sweat but blood; Their names are written not with pens but with life. -Madame Curie

Theory is an officer and practice is a soldier. -Leonardo da Vinci

If a person doesn't do it in a down-to-earth way, everything he hopes will come to nothing. -Molova