Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.

The remark is typically read as a blend of humility and encouragement: even someone celebrated for mathematical physics can feel outmatched by the subject’s depth. It reframes “difficulty” as normal rather than shameful, suggesting that struggle is part of genuine learning. The line also plays on Einstein’s public image as a genius, using self-deprecation to reduce intimidation and invite persistence. In a classroom or mentoring context, it functions as reassurance that mathematical understanding is not a simple ladder one climbs once, but an ongoing confrontation with ever more subtle problems—so students should not equate effort with inadequacy.