99% of failures come from people who have the habit of making excuses.

You can have results or excuses, not both

Whenever you find yourself doubting how far you can go, just remember how far you have come.

Don’t confuse your path with your destination. Just because its stormy now doesn’t mean you are headed for failure.

Pure mathematics is in its way, the poetry of logical ideas.

A hero is no braver than an ordinary man, but he is braver five minutes longer.

Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

99% of genius comes from hard work, the remaining 1% comes from innate talent

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

It always seems impossible until it's done.

We learn more from failure than we do from success.

There are no bad mistakes in maths, only discoveries.

A book a day keeps the stupidity away.

Everything you want is on the other side of fear

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.