(literally) know the other side and yourself, a hundred battles will not be perilous

prefer / had better; would rather

(idiomatic) tears (drops from the eyes)

(informal) "not knowing even a millimeter": completely ignorant in regards to something

crēdō ut intelligam

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

fact; truth; reality / (as a) a matter of fact, actually, the fact (of the matter)

(idiomatic, proverb) be quick on the uptake, understand the whole situation from just a few clues