Pharo is a modern Smalltalk dialect designed with the professional in mind.
Pros
Pro Object-Oriented
In Pharo everything is an object. Compiler - object, network - object, method - also an object. And objects communicate with messages. No operators, no control-flow statements. Just objects and messages. Few things to learn, but you can learn OOP well.
Pro Simple language, live environment, (almost) everything available for exploration and modification
Pro Easily learnt
There is good, free documentation including several books written by experts with extensive examples. There is an online MOOC. There are many tutorial videos. Supportive conferences and community. Even a professional support option if desired.
Pro The power of Smalltalk
Smalltalk isn't very used in industry, but is excellent for the personal grow of the programmer.
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