Quote by Joseph-Louis Lagrange
"Perseverance in the face of difficulty is not a burden; it is the exercise of human freedom."
"Perseverance in the face of difficulty is not a burden; it is the exercise of human freedom."
"The true system of the world has been recognised, last, in the masterly work of Newton on the Mathematical Principles of Natural Philosophy."
"I have turned my mind to the great problems of mathematics."
"The study of mathematics is like climbing a high mountain."
"Nature laughs at the difficulties of calculus."