No after life well not heaven or hell but reincarnation is a fundamental truth in buddhism basically if u don't reach a state of nirvana which means u don't flip flop or change and remain 'constant' forever u won sxb especially mentally but if their even a slight change u still stuck in the cycle, u achieved to break the cycle of change and have reached 'fixed' position which some say is where u meet god some say it's perfection others describe it differently but u beat the cycle of change. He was smart dude wallahi when he noticed the common thing in life is 'change' he said the answer must be finding the state where there is no change and he describes as completely bliss i haven't studied his experience but it will be different for everyone but at least u won't be in the continous cycle of change and if u die without reaching this stage of no change and totally fixed, it is believed u will re-enter this universe in another state maybe an animal, vegatation, dirt, soil, rock, what u come back as is not known but the fact u will come back is known because we know u will just 'change' into something else because we know change is the problem as u continously cycle thru this it can be never-ending sxb where u keep coming back but never found the answer in life