Quintus Curtius Rufus, History of Alexander 9.5.2

9.5.2

Namque in urbem hostium plenam praecipiti saltu semet ipse inmisit. cum vix sperare posset dimicantem certe et non inultum esse moriturum: quippe, antequam adsurgeret, opprimi poterat et capi vivus.

By this time his left hand, with which he was shifting his buckler about, became tired with parrying the blows directed against him from all round, and his friends cried out to him that he should leap down, and were standing ready to catch him when he fell. But instead of taking this course, he did an act of daring past all belief and unheard of — an act notable as adding far more to his reputation for rashness than to his true glory. For with a headlong spring he flung himself into the city filled with his enemies, even though he could scarcely expect to die fighting, since before he could rise from the ground he was likely to be overpowered and taken prisoner. But, as luck would have it, he had flung his body with such nice poise that he alighted on his feet, which gave him the advantage of an erect attitude when he began fighting. Fortune had also so provided that he could not possibly be surrounded, for an aged tree which grew not far from the wall, had thrown out branches thickly covered with leaves, as if for the very purpose of sheltering the king. Against the huge bole of this tree he so planted himself that he could not be surrounded, and as he was thus protected in rear, he received on his buckler the darts with which he was assailed in front; for single-handed though he was, not one of the many who set upon him ventured to come to close-quarters with him, and their missiles lodged more frequently in the branches of the tree than in his buckler.