Noli, obsecro, istum disturbare!

• Archimedes

Noli turbare circulos meos!

• Archimedes

Végre nem butulok tovább

I want to be giving a lecture, finishing up an important proof on the blackboard, when someone in the audience shouts out, ‘What about the general case?’. I’ll turn to the audience and smile, ‘I’ll leave that to the next generation,’ and then I’ll keel over.

• Paul Erdős

Find ways to be kind.

If there is a problem you can’t solve, then there is an easier problem you can’t solve: find it.

• G. Polya

Mathematics is the cheapest science. Unlike physics or chemistry, it does not require any expensive equipment. All one needs for mathematics is a pencil and paper.

• G. Polya

If you wish to learn swimming you have to go into the water and if you wish to become a problem solver you have to solve problems.

• G. Polya

Rien sans preuve.

The good Christian should beware the mathematician and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of hell.

• St. Augustine