Language Point 13

... encouraging creative impulses and then acting upon them. (Para. 4)
impulse: n. a sudden wish or urge
His friends advised him not to act on impulse and he should think carefully before his decision. 他的朋友劝告他不要意气用事，在作出决定之前应该慎重考虑。
Do not take it seriously; he did it out of impulse.

别把这当回事，这是他一时冲动所为。
act upon: act according to
Becoming more creative means paying attention to that endless flow of ideas you produce, and learning to capture and act upon the new that's within you. (Para. 16)

变得更有创造力意味着留意你头脑里的无穷无尽的想法，学会捕捉你脑子里的新想法并将其付诸行动。
A patient should usually listen to his doctor's advice and act upon it.

一般说来，病人应该听从医生的劝告，并照医生的意见做。