prevention is better than cure

it's the thought that counts

hunger is a good sauce

"by all that's most sacred!", for the love of God! (expresses exasperation)

with limited resources, one should work with what they have rather than doing nothing and waiting for an improvement

all cats are grey in the dark

if you know what I mean (indicating a suggested or hinted idea)

Alternative form of a esperança é a última que morre

(idiomatic) since time immemorial; since the beginning of time

to each his own (every person is entitled to his or her personal preferences)