You can recognize a small truth because its opposite is a falsehood. The opposite of a great truth is another truth.
Those who are not shocked when they first come across quantum theory cannot possibly have understood it.
The very nature of the quantum theory … forces us to regard the space-time coordination and the claim of causality, the union of which characterizes the classical theories, as complementary but exclusive features of the description, symbolizing the idealization of observation and description, respectively.
An expert is a person who has made all the mistakes that can be made in a very narrow field.
The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.