去る者は日々に疎し
Meanings
1
with time we forget those who have died; out of sight, out of mind
Proverb meaning that as time passes, memories of the deceased fade. Also used more broadly like 'out of sight, out of mind'.
They say 'with time we forget those who have died,' but I still often remember my late grandfather.
2
friendships fade with distance
Proverb meaning that when people are apart, their relationship gradually weakens.
I've lost touch with a friend who moved far away. It's true that friendships fade with distance.