Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.

One reason why mathematics enjoys special esteem, above all other sciences, is that its laws are absolutely certain and indisputable, while those of other sciences are to some extent debatable and in constant danger of being overthrown by newly discovered facts.