The Path of Krishna is not that hard to grasp either: you have a mission in life; put your heart and soul into that and let God do the rest. Get your job done and then move on to more spiritual things.
The Path of Lao-Tzu is to recognize the Self in everything that comes your way. God's divine play can be recognized in the yin and yang of life. Merge with the holy now without getting lost in it.
I called this note "When the three Paths Merge into One" for a reason for the fourth - Buddha's - isn't one. The three Paths reach where Buddha already sits, under the Mahabodhi tree. Go inside and discover that you are already Home and as a matter of fact never really left.