He suffered incessantly from the fact that his critical faculties transcended his constructive capacities. In a manner of speaking, his critical sense robbed him of his love for the offspring of his own mind even before they were born.

Albert Einstein
Profession: Scientist
Nationality: German
Some suggestions for you :
If you can't explain it simply, you don't understand it well enough.
Student is not a container you have to fill but a torch you have to light up.
We can't solve problems by using the same kind of thinking we used when we created them.
Don't do anything that goes against your conscience, even if your country says so.
I'd rather be an optimist and a fool than a pessimist and right.