He was diagnosed with schizophrenia.

The problem of finding the least common multiple is one of the basic problems in mathematics.

This chemotransmitter plays a crucial role in transmitting information between nerve cells.

He is undergoing psychotherapy to overcome anthropophobia.

The moment I saw the exam questions, my mind went blank.

The 24-cell is one of the convex regular polytopes in four dimensions.

He always keeps in mind the phrase 'If one learns without thinking, it is a waste.'

Earthquakes, thunder, fires, and fathers are what people fear the most.

Believing that failure is a stepping stone to success, he started a new business.

Believing that failure leads to success, he continued to challenge himself over and over again.