I like to be accurate, strict, and formal in everything. These are the qualities that a noble mind should have.

(Russian novelist and dramatist Chekhov)

Only one can stand out only if he or she can stand a rigorous test. (Professor and management guru of Taiwan Chiao Tung University, Zeng Shiqiang, "Hu Xueyan's Enlightenment")

We must find an inseparable partner for our enthusiasm, and this partner is strict observation. (French scientist Pasteur)

To engage in science and learning, we must be "neither empty nor loose, strict to the end", and we must be very strict in our lifelong work. (Chinese mathematician Hua Luogeng)

Anyone who takes the truth lightly in small matters cannot be trusted in big matters. (Einstein)

The method of learning is strict, serious and rigorous. (Su Buqing)

An industrialist should be as calm and strict as a technician who makes machines. If you want to truly build a career, you must calculate the friction of every smallest screw.

(Golky former Soviet Union)